Guys I know this is a very annoying, this question always comes up but I really need a final answer.
For the golf tee mod, if I wanted to unplug the vaccum line, what should I use to cover the it. I dont have a vacuum plug, what else could I use? Would duck tape be good enough?
Thank you and Im sorry for bringing up this annoying subject again.

just unplug it from the inside of the trunk instead of going under the car. It does the same thing and no error is thrown and the dealer will not complain. Just do it from the trunk instead of tying that stupid hose

Yes but what I meant is that if the car is still trying to suck in air, but we blocked off the hole....then what happens?
Will it simply stop sucking air or is it gonna keep trying and possibly damage something??

(It has been said)based on the posts I have read here; the only thing you might suffer is a mild loss of low end torque, under the 2k range. Maybe others with firsthand knowledge can confirm or debunk this claim.

Yes but what I meant is that if the car is still trying to suck in air, but we blocked off the hole....then what happens?
Will it simply stop sucking air or is it gonna keep trying and possibly damage something??

Nothing will happen. Even when it's plugged in, it's not sucking air through, it's only drawing a vacuum. It only sucks air if it's leaking.